package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /*
    * 员工登录
    * */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){


        //1.根据页面提交的密码password进行MD5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败的结果
        if (emp == null){
            return R.error("登录失败");

        }

        //4.密码对比，如果不一致则返回登录失败结果
        if (emp.getPassword().equals(password)){
            return R.error("登录失败");

        }

        //5.查看员工状态，如果为已禁用状态，则返回员工已禁用结果

        if (emp.getStatus() == 0){

            return R.error("该账户已禁用");
        }


/*        //登录成功生成jwt令牌，下发令牌
        HashMap<String, Object> claims = new HashMap<>();
        claims.put("employee",emp.getId());

        //生成jwt令牌包含登录员工的信息
        String jwt = JwtUtils.generateJwt(claims);

        log.info("jwt:{}",jwt);*/

//        6.登录成功，将员工id存入session并返回登录成功的结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);



    }

    /*
    * 返回登录
    * */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");

    }

    /*
    * 新增员工
    *
    * */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工:{}",employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户的id
//        Long empId =(Long)request.getSession().getAttribute("employee");

//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");

    }



    /*
    * 分页查询
    * */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);

        //构造分页构造器
        Page<Employee> pageInfo = new Page<>(page, pageSize);

        //构造条件构造器(往条件构造器中添加条件)
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件（如果name为空的时候则没有下面的条件）
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //添加排序条件(根据更新时间进行排序)
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询条件（MybatisPlus都写好的查询语句调用就可以）
        employeeService.page(pageInfo,queryWrapper);

        //前端需要什么样的数据就返回什么样的数据就可以
        return R.success(pageInfo);
    }


    /*
    * 更新员工status启用还是禁用的状态
    * */
    @PutMapping
    public R<String> update(HttpServletRequest request ,@RequestBody Employee employee){

        log.info("修改信息:{}",employee);
        //通过请求对象拿到修改员工状态的管理员信息
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);

        employeeService.updateById(employee);


        return R.success("员工信息修改成功");
    }

    /*
    * 修改员工信息(回显员工数据)
    * */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){

        log.info("被修改员工的id:{}",id);

        Employee byId = employeeService.getById(id);

        return R.success(byId);

    }







}
